Mechanical movement.



T. A. C. BOTH.

MECHANICAL MOVEMENT, APPLICATION FILED JAN. 5, 1911.

Patented Jurfe 13, 1911.

, 3 SHEETSSHEET 1.

v M/VE/VTUR Q3 6% ATTIRNE WITNESSES wnc T. A. C. BOTH.

MECHANICAL MOVEMENT.

APPLICATION FILED JAN. 5, 1911 994,713, Patented June 13,19

3 SHEETS-8HEET 2.

WITNESSES ATTORNEY T. A. O. BOTH. MECHANICAL MOVEMENT.

APPLIOATION I'VILED JAN. 5, 1911. 994,713. v Patented June 13,1911

- 3 SHEETS-SHEET 3.

TONJES AUGUST CARL BOTH, OF NEW YORK, N. Y., ASSIGNQB TO IDA S.RQSENHii-XBE, OF NEW YORK, N. Y.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patent-ed June 13, 191 1.

application filed. January 5. 1911. Serial No. 600,329.

To all whom it may concern? Be it known that I, Tomas AUGUST CARL Born,a citizen of the United States, and a resident of New York, in thecounty of New York and State of New York, have invent ed new and usefulImprovements in Mechanical Movements, of which the following is aspecification, taken'in connection with the accompanying drawings, whichform a part of the same.

This invention relates to mechanical movements adapted for universalapplication and is an improvement upon U. S. Patent No. 943,274,patented December 14, 1909.

More particularly it relates to a mechanical movement which will, aswill said former patent, make a quick make as well as a quick break whenused as the operating mechanism of an electric switch, though of course,it is to be understood that my present invention is not to be limited tosuch use.

My invention further relates to electric light sockets and to details ofconstruction as will be more fully hereinafter pointed out and set forthin the claims.

In the accompanying drawings showing illustrative embodiments of myinventionand-in which the same reference numerals refer to similar partsin the several figures,+Figure 1 is a central vertical section throughmy improved electric light socket equipped with my mechanical movement;Fig. 2 is a transverse horizontal section substantially on the line 2, 2of Fig. 1, the handle or button of the driving member being shown inplan; Fig. 3 is a side elevation of the electric light socket with thecasing and cap omitted. looking in the direction of the arrow numbered3; Fig. 1 is an elevation, partly broken away for purposes ofillustration, of the electric light socket, looking in the direction ofthe arrow numbered 4, withtheomission of the casing and cap; Fig. 5 is adetail perspective view of the driven member; Fig. 6 is a detailperspective viewof one of the spring arms carried by the driven member;Fig. 7 is a detail perspective view of the detachable bearing for thedriving member or arbor; Fig. .8 is a side elevation of the electriclight socket showing the screw shell in the act. of being assembled;Fig. 9 is a detailperspective View of the fixed member of the mechanicalmovement which is also, when the device is used with anelectric lightsocket, the insulating modification in which the fixed member orinsulating base is formedin two parts and the screw shell. is crimped orbent over a dependent flange or boss on the lower of the two parts ofthe fixed or insulating member; Fig. 16 is a detail vertical section ofthe modification shown in Fig. 15 showing'the manner of mounting theinclined surfaces on one of the two parts of the fixed memher, it beingunderstood that by the term fixed member it is meant the fixed member ofthe mechanical'movement which,'in

the device as illustrated, is also the insulating base of the electriclightsocket; Fig. 17 is a fragmentary side elevation, partly brokenaway, and partly in section, showing a bayonet slot connection bet-weenthe fixed member or insulating base of the electric light socket and thescrew shell; Fig. 18 is a horizontal section substantially on the line18, 18 of Fig. 17, looking up in the direction of the arrows; Fig. 19 isa ver 'tical section through a fixed member showing a modificationwherein the oppositely inclined surfacesare on a separate member whichis secured to the fixed member or 1n- ,sulating base and becomespractically a part thereof; Fig. 20 is a horizontal sectionsubstantially on the line 20-20 of Fig. 19; Fig. 21 is a detailperspective view the separate element on which are mounted theoppositely inclined surfaces and which is secured in the recess in theinsulating base or fixed member shown irr'Frgs. 19 and 20;

Fig. 22 is a detail perspective view showing a modified form of drivenmember wherein the sprihgs are formed 1ntegral with it; Fig. 23 is adetail perspective V ew of another ,modification in which the springmembers are also integral with the driven member; Fig. 24 is a plan Viewof the driving member or arbor with the omission of the button orhandle; and Fig. 25 1s a detail fragmentary plan view showing the mannerof pressing or crimping the edges 31, 31 of the screw shell to theinsulating base.

In the illustrative embodiments of my mechanical movement (which I haveshown as-the operating mechanism of an electric light socket) 1 is thefixed member of my mechanical movement, 2 the driving memher, 3 thedriven member and l an arm upon which I arrange oppositely inclinedsurfaces 5 and 6 upon which operate the spring members 7, 7 carried bythe driven member The fixed member 1 is provided with a recess 8, thewalls 9, 9 of which act as a guide for the flange 10' of the drivenmember The arm 4 upon which the oppositely inclined surfaces 5and 6 aremounted is fast to the fixed member 1 and is preferably, though notnecessarily, formed integ al with it, as shown in Fi 1, though this armmay be formed as a separate element and secured to the fixed member asshown for example in Figs. 19, 20 and 21, which will be hereinafterdescribed in detail.

I mount the driving member or arbor 2 in any suitable manner within thefixed member 1. An efficient manner of mounting it which I have found inpractice is to form a reduced portion 11 on the axle or arbor 2 and forma complementary aperture or opening 12 in the arm 4 to receive thereduced portion 11.' The axle or arbor 2 is formed noircircular incross-section as for example by providing it with a flattened portion 13which passes through and cooperates with a non-circular opening lat inthe driven member 3.

The spring members 7, 7 or equivalents, may be secured to the drivenmember 3 in any suitable manner. For example the spring arms may beformed integral with the driven member, as shown in Figs. 22 and 23 tobe hereinafter described in detail, or the spring members may beseparate as shown at 7 in Fig. 6, where they comprise substantially apiece of spring metal bent back upon itself forming an engaging arm 15to engage with the fixed oppositely inclined surfaces 5 and 6, the otherend 16 of the member 7 being bent back upon itself form a shoulder 17.JV hen the-form of pring arm 7 is used I preferably form a epression 18in the face '19 of the driven member 3' by stamping or pressing this port' "of the metal inward to form supporting es 20, 20, Fig. 2, upon whichrests the ders 17, 17 of the spring arms 7, 7. At same time I alsopreferably form inthe i 19 of the driven member 3 rectangular slots 21,21 to partly receive the shoulders 17, 17 In the flange 10 of the drivenmember referably form a plurality of notches or arranged in pairs, toreceive the ends 23, 23 of the end 18 of the air arm 7, Fig; 2. Theflanges 10 are (1H9 preferab notched or cut away at 24 so as to permitthe spring arms to move outwardly without being limited in. their playby the edge 25 of the flange 10. "hcn the shoulders 17, 17 and thespring arms 7, 7 are mounted upon the shelves 20, 20 and theangular ends23, 23 cooperate with the notches 22, 22 this form of driven member 3 isin condition to have the free arms 15 of the members'7, 7 sprung overthe inclined surfaces 5 and 6. W hen the fixed member 1 with itsinclined surfaces 5 and 6 and the driving member 2' and. driven member 3are properly assembled, as shown for example in Fig. 1, it isobvious'thatupon a partial rotation of the driven member 3 by partiallyrotating the button or handle 26 this movement will also cause a partialrevolution of the driven member 8 due to the fact that the flattenedportion 13 of the driven member passes through the non-circular portion14 of the driven member 3. This partial rotation of the driven member 3,with its spring arms 7, 7 will cause the free arms 15, 15 of the members7, 7 to move from a valley or low portion of one of the inclinedsurfaces 5 orfi, to the hill or larger portion of the next inclinedsurface, which movement will cause the free arms 15, 15 to be spreadwhich will store up energy in the arms 7, 7 until the partial revolutionof the driven member is completed, when this storedup energy will beutilized by the arms 15, 15 moving down one or the other of the inclinesurfaces -5 or 6 passing from a hill to a valley. In

making this movement, however, they will necessarily cause thedriven'mem'ber 3 to move laterally upon the driving member 2 to the leftor right of the position-shown in Fig. 1, as the case maybe; thedirection of movement being alternate with each successive partialrevolution of the driving memher 2. This will cause the driven member 3to move with a sharp, quick snap in both directions successively, thedriven member being guided upon the walls 9, 9 of the fixed member 1 ofthe mechanical movement on which. is iminovably mounted the oppositelyinclined surfaces 5 and 6, it of course being understood that thesesurfaces do not rotate or move. hile I preferably use two spring arms 7and pairs of oppositely inclined surfaces, it is to be understood thatmy invention will operate with only one spring arm 7 and with simply twooppositely inclined surfaces. This alternate quick movementor snap ofthe driven member 3 Y may be utilized for various purposes. For purposesof illustration I have shown it as the operating mechanism in anelectric light socket in which the fixed member 1 becomes the insulatingbase of the electric light socket, though it is to be distinctly understood that while I referably make the fixed member 1, or insulatingbase,.of one piece of material,it may be formed of a plurality of partssuch as shown in Fig. 15, to be hereinafter described, and instead ofthe oppositely inclined surfaces being formed integral with the fixedmember 1 they may be on a separate member which is secured to theinsulating base or fixed member as shown for example in Figs. 19, 20 and21 to be also hereinafter described.

In the preferred form of the fixed memher 1 when it is used as theinsulating base for an electric light socket, the entire base 1 isformed out of porcelain or some other similar insulating material,theoppositely inclined surfaces 5 and 6 being preferably, thoughfinotnecessarily, formed upon an integral arm 4 which can be readily moldedor shaped by the proper tools passing through the apertures 27, 27,Figs. 1 and 3,

without forming any cross-holes, which cross-holes would increase thecost of manu- .facturing the fixed member or insulating base.

My invention also includes a cheap, simple and economical manner ofsecuring the side contact for an electric light socket, which is usuallyin the form of a screw shell, to the insulating base or receptacle ofthe socket, whether that insulating base is formed of one or more parts,without the aid of screws, rivets, or other similar members to'hold thescrew shell to the insulating base.

I have found in practice that a cheap and economical way ofmanufacturing an electric light socket is to form cooperating engagingsurfaces 28 upon the shell or side contact 29 and form cooperatingengaging surfaces 30, Figs. 8 and 10, upon the insulating base orreceptacle 1. These engaging surfaces may take the form as I have shownof flanges and grooves. Simply for purposes of illustration I have shownthe engaging surfaces or flanges 28, 28 upon the side or screw shellcontact 29, Figs. 3 and 11, and so arranged that they can readily slipin the recesses or grooves 30 mounted on the insulating base orreceptacle 1. But it is to be distinctly understood that thisarrangement of flanges and recesses may be reversed, if desired, theform shown beingmerely illustrative. My invention as applied to anelectric light socket, however, covers broadly any such cooperating.engaging surfaces which will securely hold the shell. contact to theinsulating base without screws, rivets, pins, or other similar securingmechanism. After the flanges 28, 28 with their screw shell 29 have beenproperly seated, the edges 31, 31 of the screw shell contact 29 may bebent in to engage with the cut away portions 32,

32, Fig. 25, so as'to prevent the flanges 28,

28 from slipping out of the grooves 30, 30. This bending in of the edges31, 31 may, however, be omitted.

On the screw shell contact 29 I mount in of two diameters 50 and 51.

forming it integral with the screw shell contact as shown for examplein'Fig. 1, or mounting it'in any other suitable manner so that it willbend back upon itself, and when the screw shell is assembled with thefixed insulating base 1 this contact. 33 will rest upon what may betermed'the floor or lower portion of the aperture 8 formed in the fixedinsulating member- 1, Fig. 1. Opposite this contact 33 and resting onthe upper portion of the recess 8 is mounted the cooperating contact 34.This contact is shown in detail in Fig. 12 and includes a bent arm 35which fits snugly in the side re- ,cess 36 of the fixed insulatingirember 1,

the bent apertured foot 37 fitting snugly against the cut away portion38 so that the screw threaded aperture 39 will register with theaperture 10 in the insulating base 1. Cooperating with a portion of thiscontact 34- is the binding plate ll, Fig. 13, having an arm -12 whichoverlaps the bent portion 35 of the contact ill-and an angular member 43which fits snugly in the cut away POIllOIl -14, the screw threadedaperture 45 of which also registers with the aperture 4-0 in theinsulating base 1 and with the screw threaded aperture 39 in the contact34. The lower end 46 fits snugly in the cut away portion 47. Fig. 9, ofthe insulating base 1, and in this lower end 46 is the bind ing screw 48to which is secured one end of one of the feed wires. A screw 49 shownin dotted lines in Fig. 8 and in full lines in Fig. 3, is passed throughthe aperture 40 in said Fig. 8 and the screw threaded end serves toengage and cooperate with the screw threaded portions 15 and 39 of thebinding plate. 41 and contact 34, respectively, and securely hold themin their proper position on the insulating base 1.

In the lower portion of the insulating base or receptacle 1, I form atransverse aperture preferably. though not necessarily, In the largeraperture 50 is mounted a nut 52 to cooperate with the screw threaded end53 of the center contact plate 54. Figs. 1 and 14. This center contact54 is of peculiar contour. It consists essentially of the body memberhaving up 'ardly and downwardly extending arms-56 and 57, respectively.the lower arm being bent back upon itself andpreferably enlarged to formthe center contact 58 of the electric light socket. The upper arm 56 isbent at an angle to itself and. preferably enlarged to form. a bindingplate 59. and is provided with a screw thread 60 forthe reception of thebinding screw (31. Fig. 3, to which one of the feed wires is connected.The. body member together with the screw threaded portion 53. isinserted within the aperture '51 in the lower portion of the insulatingbase 1, the arrangement being such that a portion of the screw threadedend 53 will eirtend into the larger aperture 50 so as to permit the nut52 to engage with it and securely hold the entire center contact plate54 with its center contact 58 and its binding plate 59 to the insulatingreceptacle 1 by'means of the nut 52, Fig. 1.

Another portion of my invention is the new and useful bearing 62, Figs.7, 1 and 2, for the driving member 2. This bearing comprises a bodymember having a bent foot 63 provided with a screw threaded aperture 64to cooperate with the screw 65, Figs. 3 and 4, which is mounted in arecess in the insulating base-or fixed member 1, the head of the screwbeing shown in Fig. 3 and its end being shown in Fig. 4 in engagementwith the foot of the bearing 62. The other end of the body member 70 isprovided with an offset portion 66 which is apertured at 67 so as topermit the ready insertion of the axle, arbor, or driving member 2. Theend of the offset portion 66 is then bent down at right angles forming astop 68 for a purpose to be hereinafter described. The upper part of thestop 68 is cut away to form a bearing or seat (39 for the axle or arbor2, the body member 70 is also recessed at 71 to form a bearing similarto the other just described, but staggered with relation thereto. Inassembling the parts I preferablypass the axle or arbor 2 through theslot 67 and then bring them into operative position within theinsulating base 1, the foot 63 being held. from movement by means of thescrew as previously described. Then this bearing 62 is thus assembled itnot only forms a bearing for the driving member 2 but the body member 70of the bearing acts as a "stop to the outward movement of the drivenmember 3 and the 1nember 68 also acts as a stop to the inward movementof the button or handle 26 of the driving member 2 so that this hearing62 performs several functions.

b'or purposes of illustration I have shown my electric light socketsurrounded by a casing 72 and a cap 73, the former being lined with anysuitable insulation 74 and the latter with a similar insulation 75. Itis to be distinctly understood, however. that my invention does notembody this casing or cap and I have, therefore, to more readily illu.

trate my invention, omitted them in the other figures of the drawing.Such casings and caps may or may not be used, as may be found convenientor expedient; though usually they are employed.

In this form of my invention a partial revolution of the driving member2 will cause the driven member 3,,to also partially rotate with it,which. will spread the free arms 15 of the spring arms 7. causing themto pass from a valley to a hill on the oppol inclined sitely inclinedsurfaces 5 and 6. This will cause energ to be stored up in the springarms and they will then move down. from a hill to a valley on theincline surfaces 5 and 6, which it is understood are always fixed orfast. As these spring members 7 are carried by the driven member 3 itnecessarily follows that this driven member will be caused to move backand forth on the driving member 2 alternately, and consequently as thismember 3 is formed of some metallic conducting material it willalternately make and break the electrical connection between thecontacts 34 and 33 with a quick, sharp snap which will prevent arcing ofthe parts and in this manner the lamp secured to the screw shell or sidecontact 29, or any other consuming device, will be alternatelyenergized.

In some cases instead of forming the fixed member 1 as a singleinsulating member I form it of a plurality of parts such for example asthe parts 76 and 77, as illustrated in Figs. 15 and 16, the two partsbeing connected together by means of screws 78, or other fastening meansIn this construction the oppositely inclined surfaces 5 and 6 will beformed preferably on one or the other of the members 76 and 77. Forpurposes of illustration I have shown the oppositely inclined surfacesformed upon the member '76. In some instances also I may form adepending flange 79, Fig. 15, on the lower member 77 and crimp, swage orotherwise press the upper end 80 of the screw shell contact 81 over theflange 79, thereby avoiding the use of screws, rivets, pins, or othersimilar securing means to hold the screw shell or side contact to theinsulating base. In this construction I have shown the contact 82riveted by means of rivets 83 to the screw shell contact 81, it beingunderstood that it performs the same function that the contact 33 doesin the construction illustrated-in Fig. 1.

Instead of using flanges such as 23, 28 in- Fig. 1 or crimping the upperedge of the screw shell contact to the insulating base, I may in somecases form the screw shell co tact 84, Fig. 17, with an annular inturnedring 85 in which I form one or more slots 86. On the lower portion ofthe insulating receptacle 87, Fig. 17, I may mount in any suitablemanner ,angular lugs 88 which are adapted to pass through the slots 86,86 in' the ring 85 and engage beneath this ring when the screw contact8% and the insulating base 87 are given a relative rotation withrelation to each other. thereby forming, in effect, a' bayonet slotconnection between the screw shell 8% and the insulating base 87, it ofcourse being understood that the arz-rm'igementof slots and lugs may bereversed without departing from my invention.

\Vbile I preferably form the oppositely surfaces 5 and 6 integral withthe fixed member 1 of my mechanical movement,

or if this member 1 is used as the insulating base of an electric lightsocket, then I preferably form the oppositely inclined surfaces integralwith the same material that the insulating base is formed of. I may insome. instances form these oppositely inclined surfaces upon a separatemember 89, Fig. 21, and mount this member within the fixed member 90,Figs. l9 and 20, which as here illustrated is preferably, though notnecessarily, formed of a single member. This member 89 is so mounted inthe fixed or insulating member 90 as to permit the oppositely inclinedsurfaces 5 and 6 to extend into the aperture or opening 91. in the fixedmember 90, the member 89 being held in proper position by any suitablemeans such for example as by means of the pins 92, 92. Figs. 19 and 20.

In some cases it is desirable'to form the spring members or arms 7integral with the driven member. driven member 192' having integralspring arms 93. 93 which are adapted to contact directly with theoppositely inclined surfaces 5 and 6. The body member 94 of this form ofdriven member serves to make the electrical connection between thecontacts 33 and 3 To form a stronger spring I preferably form the crimps95, 95 in the in- 5 means between the driving and driven memibers tocause them to rotate together but Zpermitting relative lateral movementwith tegral spring arms 93, 93.

I may vary the contour of the driven member by forming it for exampleout of a single integral stamping or sheet of material forming a drivenmember 96, Fig. 23, having a cupped shaped member 97 to which areconnected integral spring arms 98, 98.

The driving member 2 is preferably formed from a punched strip of fiatmetal, Fig. 24, its ends 11 and 99 being rounded by swaging orotherwiseforming them so that the end 11 will cooperate with its seat 12in the arm 4, while the rounded portion 99 will cooperate with the cutaway recesses 69 and 71 in the bearing 62, Fig. 7. This driven member 2may therefore be formed out of a continuous strip of flat material cutto the proper length, and swaged, pressed or otherwise worked to formthe" bearings 11 and 99 as previously described.

WVhile I preferably form the driven member 2 in the manner previouslydescribed, it is to be understood of course that it may be formed in anysuitable manner whether from flat stock or not.

I also preferably employ retarding notches 100. 100 on the angular edgesof the oppositely inclined surfaces 5 and 6 which serve to hold thespring arms 7 93 or 98, as the case may be, from moving down theinclined, surfaces 5 and 6 until the partial rev olution of the, drivingand driven member is completed. These notches are more clearlyillustrated in Fig. 21.

In FlgIQQ I have shown a Having thus described this invention inconnection with several illustrative emb0diments thereof to the detailsof which I do not desire to be limited, what is claimed as new and whatit is desired to secure by Letters Patent is set forth in the appendedclaims:

1. In a. mechanical movement the combination of a fixed member providedwith opbers to cause them to rotate together, but permitting relativelateral movementwith relation to each other.

2. In a mechanical movement the combination of a fixed member providedwith oppositely inclined surfaces, a driving memher and a driven member,means between the s drivmg and driven members to cause them to rotatetogether but permitting relative lateral movement with relation to eachother, and spring means carried by the driven member to cooperate withthe oppositely inclined surfaces of the fixed member.

3. In a mechanical movement the combination of a fixed member providedwith an arm having oppositely inclined surfaces,-a driving member and adriven member,

relation to each other, and means carried by the driven member tocooperate with the oppositely inclined surfaces of the fixedmember.

4. In a mechanical movement the combination of a hollow fixed memberprovided with an arm extending into the hollow port-ionof the fixedmember and having oppositely inclined surfaces, a driving member and adriven member, means between the driving and driven members to causethem to rotate together but permitting relative lateral movement withrelation to each other, and means carried by the driven memher tocooperate with the oppositely inclined surfaces of the fixed member.

5. In a mechanical movement the combination of a fixed member formed ofone or more rts and provided with an aperture, oppositely inclinedsurfaces carried by the fixed member, a driving member mounted inthefixed member, a driven member also mounted in the fixed member, meansbetween the driving and driven members to cause themtorotate togetherbut permitting relative lateral movement-with relation to each other,and means carried by the driven member to cooperate with the inclinedsurfaces of the fixed member.

6. In a mechanical movement the combination of a one piece fixed memberprovided.

with an aperture, oppositely inclined surfaces carried by the fixedmember, a driving member mounted in the fixed member, a driven memberalso mounted in the fixed v member, means between the driving and drivenmembers to cause them to rotate together but permitting relative lateralmove,- ment with relation to each other, and means carried by the drivenmember to cooperate in with-the inclined surfacesof the fixed member.

7. In a mechanical movement the combination of a fixed inclosing memberformed of one or more parts and provided with oppositely inclinedsurfaces, a driving member mounted within the fixed member, a drivenmember'mounted on the driving member, means between the driving anddriven members to cause them to rotate together but permitting relativelateral movement with relation to each other, and means carried by thedriveirmember to cooperate with the fixed oppositely inclined surfacesof the fixed member.

8. In a mechanical movement the combination of a fixed member providedwith oppositely inclined surfaces and with an aper tune, a drivingmember mounted within the aperture of the fixed member, a driven memberalso mounted within the aperture of the fixed member and adapted to beguided by the walls of said aperture, means between the driving anddriven members to cause them to rotate together, but permitting relativelateral movement with relation to each other, and means carried by thedriven member adapted to cooperate with the fixed inclined surfacescarried by the fixed member.

9. An article of manufacture for a me- 40 chanical movement comprising acupped -shaped driven member provided with a plurality of recesses andone or more spring arms carried by the driven member, each spring armcooperating with a plurality of recesses in the driven member so as tohold it to said member.

10. An article of manufacture for a mechanical movement comprising abearing I having means to secure it to its support and .50 provided witha plurality of stops arranged staggered with relation to each'other.

11. An article of manufacture for a mechanical movement comprising abearing having a foot and a body member, and a slotted arm arranged atan angle to the body member, the end of the aim being bent at rightangles to itself forming a stop, the

body member forming another stop and arranged staggered with relation tothe first stop.

12. An article, of manufacture for a mechanical movement comprising acupped shaped driven'member provided with a plurality of apertures andwith one, or more shelves, one for each spring arm, one or more springarms carried by the driven member, a portionof each spring arm restingupon a shelf of the driven member, the end of each spring armcooperating with apertures in the driven member to hold it on its shelf.

13. A mechanical movement comprising a fixed member formed of one ormore parts and provided with fixed oppositely inclined surfaces and withan opening or aperture, a driving member mounted within the opening oraperture of the fixed member, a driven member also mounted within theopening or aperture and guided by the walls of said aperture, meansbetween the driving and driven memberscto cause them to rotate together,but permitting relative lateral movement with relation to each other,and spring means carried by the driven member to cooperate with thefixed oppositely inclined surfaces of the fixed member.

14. A mechanical movement comprising a fixed member formed of one ormore parts and provided. with fixed oppositely inclined surfaces andwith an opening or aperture, a driving member mounted within the openingof the fixed member, a driven member also mounted within the opening inthe fixed member and guided by the walls of said aperture, meansbetweeirthe driving and driven members to cause them to rotate together,but permitting relative lateral movement with relation to each other,means carried by the driven member to cooperate with the fixedoppositely inclined surfaces of the fixed member, .and a bearing for thedriven member comprising a bent body member having a foot and a slottedarm, the body member serving as astop to limit the outward movement ofthe driven member, the bent arm of the hearing forming a stop for theinward movement of the driving member. I

15. A mechanical movement comprising a fixed member formed of one ormore parts and provided with fixed oppositely inclined surfaces and withan opening, a driving member mounted within the opening of the fixedmember and provided with a button or handle, a driven member mountedwithin the opening in thefixed member and guidedby the walls of saidaperture in'said member, means carried by the driven member to cooperatewith thefixed oppositely inclined surfaces of the fixed member, meansbetween the driving and driven members to cause them to rotate together,but permitting relative lateral movement with relation to each other,and a bearing comprising a bent plate including a body member having aslotted arm bent at right angles to said body member, the end of the armbeing bent down to form a stop for the inward'movement of the button orhandle, the body meml latiug base provided with integral opposurfacescarried partly by the insulating base and partly by the shell contact topermit the shell contact to be slipped onto the base and be securelyheld.

17. In an electric light socket the combination of an insulating baseprovided with a groove, a shell contact provided with a fixed inturnedflange adapted to slip into the groove in the base to removably hold theshell to the base;

18. Ira-an electric light socket the combination 01 an insulating baseprovided with one or more transverse grooves, a shell contact providedwith one or more fixed flanges adapted to cooperate with the transversegroove or grooves in the base, permitting the shell to be secured to thebase by sliding it into position.

19. In an electric light socket the combination of a fixed insulatingbase formed of one or more parts, and provided with oppo-' sitelyfixedinclined surfaces, a driving member, a driven member, means between thedriving anddriven members to causethem to rotate together, butpermitting relative lateral movement with relation to each other, meanscarried by thedriven member to cooperate with the fixed oppositelyinclined surfaces of the fixed member. contacts carried by the "fixedmember which are adapted to be connected or disconnected by alternatelateral movement of the driven member.

20. In an electric light socket the combination of a fixed insulatingmember formed of one or more parts having an opening,

'fixed oppositely inclined surfaces carried by the fixed member, adriving member mounted in the aperture in the fixed member, a drivenmember mounted on the driving member and adapted to be guided by thewalls of the aperture in the fixed member,

means between the driving and driven mem-.

bers to cause" them to rotate together, but permitting. relative lateralmovement with relation to each other, contacts carried by the fixedmember adapted to be connected or disconnected by the alternate lateralmovement of the driven member, and means car,- ried by the driven memberadapted to cooperate with the oppositely inclined surfaces of the fixedmember.

a 21. An article of manufacture for an electric light socket comprisinga hollow insulating base provided/with oppositely inclined surfaces andwith one or more locking surfaces.

22. An article of manufacture for an electric light socket comprising ahollow insusitcly inclined surfaces and with a Sr nml aperture beneaththe hollow portion of the base.

22%. An article of nianul'actm'c for an electric light socket conunisinga center contact plate provided with a locking arm having means tocoiiperale with a locking member. a downwardly extendingmember bent backupon itself to form a center contact and with an upwardly bent member toform a binding plate.

24. An article of manufacture for an electric light socket comprising anintegral one piece hollow base or receptacle provided with oppositelyinclined surfaces, and with one or more grooves to hold the screw shellcontact.

25. In an electric light socket the combination of a hollow insulatingbase or receptacle formed of one or more parts and provided with fixedoppositely inclined surfaces, a driving member mounted within theaperture of the fixed insulating member, a driven member mounted on thedriving member and adapted to be guided by the walls of the aperture inthe fixed insulating member, means between the driving and drivenmembers to cause them to rotate to gether, but permitting relativelateral movement with relation to each other, means car-' 'riedby thefixed member and adapted to be connected and disconnected by thealternate lateral movement of the driven member, and a third contactconnected directly to one of the feed wires. 26. In an electric lightsocket the combination of a fixed insulating member formed of one ormore parts and provided with a recess or aperture and with oppositelyinclined, surfaces and with engaging surfaces to cooperate with surfacescarried by the screw shell contact, a screw shell contact havingsurfaces to cooperate with those carried by the insulating base orreceptacle, a contact connected to the screw shell contact extending upinto the aperture of the fixed insulating member, a similar contactmounted within the aperture in the fixed insulating contact andconnected to a feed wire, a driving member mounted within the aperturein the fixed insulating member, a driven member mounted on-the drivingmember, means between the driven and driving members to cause them torotate together, but permitting relative lateral movement with relationto each other, means carried by the driven member to cooperate with theoppositely inclined surfaces of the fixed insulating member, and acenter contact connected to the other feed wire.

27; In an electric light socket the combi nation of a fixed insulatingmember formed of one or more parts and provided with a recess oraperture and with oppositely inclined surfaces and with surfaces tocooperate with surfaces carried by the screw shell contact, a screwshell contact having surfaces to cooperate with those carried by theinsulating base or receptacle, a contact connected to the screw shellcontact extending up into the aperture of thefixed insulating .member, asimilar contact ,mounted withinbearing for the driving member connectedto the insulating fixed memberand provided with a slotted arm having oneend bent down at an angle, the bent end acting as a stop to the inwardmovement of the driving member, the body member of the bearing operatingas a stop to the outward move ment of the driven member.

28. An article of manufacture for an electric light socket comprising aninsulating base or receptacle provided with an opening or aperture, andan inwardly extending arm provided with oppositely inclined surfacesextending into the aperture.

29. An article of manufacture for an electric light socket comprising aninsulating base or receptacle provided with an opening or apertureand aninwardly extending integral arn provided with oppositely inclinedsurfaces extending into the aperture.

30. In an electric light socket the combination of an insulatingbase orreceptacle provided with an aperture or opening, oppositely inclinedsurfaces, a groove or recess to cooperate with surfaces carried by thescrew shell contact, and with a second 0pening or recess for thereception of the center contact plate, a screw shell contact havingcooperating surfaces to engage .with the groove carried by theinsulating base and with a contact which extends up 'into the mainaperture of the fixed insulating base, a driving member mounted withinthe insulating base, a driven member mounted on the driving member,means between the driving and driven members to cause them to rotatetogether, but permitting relative lateral movement with relation to eachother, another contact mounted within the aperture of the insulatingbase, spring means carried by the driven member to cooperate with theoppositely inclined surfaces of the fixed insulating member, said drivenmember being adapted to make or break the electrical connection betweenthe two electrical contacts mounted within the aperture of theinsulating base, a center contact plate having a center contact and abinding plate, and a portion mounted within the second aperture of theinsulating base or receptacle, and a nut to cooperate with said portionof the said center contact plate to hold it to the insulating base orrace tacle.

TONJES AUGU T CARL BOTH. \Vitnesses:

M. BUSH, BENJ. STRAUSS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). C.

